WO2022266802A1 - 利用dna进行数据存储的方法、装置及存储设备 - Google Patents
利用dna进行数据存储的方法、装置及存储设备 Download PDFInfo
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- WO2022266802A1 WO2022266802A1 PCT/CN2021/101247 CN2021101247W WO2022266802A1 WO 2022266802 A1 WO2022266802 A1 WO 2022266802A1 CN 2021101247 W CN2021101247 W CN 2021101247W WO 2022266802 A1 WO2022266802 A1 WO 2022266802A1
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16B—BIOINFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR GENETIC OR PROTEIN-RELATED DATA PROCESSING IN COMPUTATIONAL MOLECULAR BIOLOGY
- G16B30/00—ICT specially adapted for sequence analysis involving nucleotides or amino acids
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16B—BIOINFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR GENETIC OR PROTEIN-RELATED DATA PROCESSING IN COMPUTATIONAL MOLECULAR BIOLOGY
- G16B50/00—ICT programming tools or database systems specially adapted for bioinformatics
- G16B50/30—Data warehousing; Computing architectures
Definitions
- the application belongs to the field of data storage, and in particular relates to a method, device and storage device for data storage using DNA.
- DNA when using DNA for data storage, it has the characteristics of high storage density, long storage time and low maintenance cost. Moreover, DNA, as the genetic information material of life, can be inserted into the microbial cells of animals and plants, and through the replication of living organisms, it can be passed down from generation to generation for permanent preservation.
- the embodiment of the present application provides a method, device and equipment for data storage using DNA to solve the problem of high synthesis cost and unfavorable DNA medium storage technology in the prior art when DNA is used for data storage broadly applicable problem.
- the first aspect of the embodiments of the present application provides a method of using DNA for data storage, the method comprising:
- the key information includes more than one core sequence, or the key information includes more than one partial base in the core sequence, and The included position information of the core sequence in the base sequence.
- the linker sequence includes one or both of the left linker sequence and the right linker sequence, when the linker sequence includes the left linker sequence and the right linker sequence sequence, the left linker sequence is different from the right linker sequence.
- converting the binary sequence into a base sequence includes:
- an overlapping region of a preset second length is included between the two associated core sequences, including:
- An overlapping region of a preset second length is included between two adjacent core sequences
- an overlapping area of a preset second length is included between adjacent odd-numbered core sequences, and an overlapping area of a preset second length is included between adjacent even-numbered core sequences;
- an overlapping region of a preset second length is included between the M+i-th core sequence and the M+N+i-th core sequence, where M and N are predetermined integers, and i is an integer variable greater than or equal to 0.
- the base sequence is divided into a plurality of core sequences with a preset first length, including:
- the last core sequence is complemented by preset repeated bases.
- storing the amplified DNA product and corresponding key information includes:
- the position information in the key information is converted into a base unit, and according to the preset combination mode, the core sequence in the key information and the base
- the base unit is stored in the form of DNA
- the core sequence in the key information and the location information of the included core sequence are stored by a computer-readable storage medium;
- the key information is stored in a mixed form of DNA and a computer-readable storage medium.
- the key information includes a core sequence at a start position and/or a core sequence at an end position.
- the key information further includes the index sequence corresponding to the linker sequence and sub-base sequences obtained by splitting the base sequence. one or two.
- the second aspect of the embodiment of the present application provides a device for data storage using DNA, the device comprising:
- a binary sequence extraction unit configured to extract a binary sequence corresponding to the data to be stored
- a first sequence conversion unit configured to convert the binary sequence into a base sequence according to a preset mapping relationship
- a base segmentation unit configured to divide the base sequence into a plurality of core sequences of a preset first length, and an overlapping region of a preset second length is included between two associated core sequences;
- a sequence splicing unit configured to splice the core sequence and the linker sequence used to mark the sequence direction to obtain a sequence block
- the DNA molecule extraction unit is used to search for a DNA sequence matching the sequence block in the pre-synthesized DNA molecule library, and amplify a predetermined number of synthetic DNA molecules corresponding to the extracted DNA sequence to obtain a DNA product;
- the DNA storage unit is used to store the amplified DNA product and corresponding key information, the key information includes more than one core sequence, or the key information includes more than one of the core sequences part of the bases, and the included position information of the core sequence in the base sequence.
- the embodiment of the present application provides a method for decoding data stored in a DNA medium, the method comprising:
- the core sequence included in the DNA sequence is extracted according to the preset linker sequence, including:
- the orientation of the obtained core sequence is determined.
- combining the overlapping regions between the core sequences, combining the core sequences to generate a base sequence including:
- the relative positional relationship between the core sequences is determined according to the overlapping region between the core sequences, and the base sequence is generated based on the core sequences with the determined relative positional relationship.
- the first possible implementation of the third aspect, or the second possible implementation of the third aspect, in the third possible implementation of the third aspect, according to the preset linker sequence extract the Core sequences included in the DNA sequence, including:
- the repeated bases included in the end of the core sequence are removed.
- the fourth aspect of the embodiment of the present application provides a device for decoding DNA media storage data, the device comprising:
- a DNA sequence obtaining unit configured to obtain the DNA sequence to be decoded and its key information
- a core sequence extraction unit configured to extract the core sequence included in the DNA sequence according to a preset linker sequence
- a sequence combination unit configured to combine the core sequences to generate a base sequence according to the key information and in combination with overlapping regions between the core sequences
- a second sequence conversion unit configured to convert the base sequence into a binary sequence according to a preset mapping relationship
- the data file generating unit is used for generating a data file according to the converted binary data.
- the fifth aspect of the embodiments of the present application provides a method for generating a DNA molecular library, the method comprising:
- the core sequence including base fragments for storing data
- the corresponding DNA molecule is synthesized according to the DNA sequence, and a DNA molecule library is obtained according to the synthesized DNA molecule.
- a sixth aspect of the embodiments of the present application provides a storage device, including a memory, a processor, and a computer program stored in the memory and operable on the processor, when the processor executes the computer program Realize the steps of the method of using DNA for data storage as described in any one of the first aspects, or implement the method of decoding DNA media storage data as described in any one of the second aspect when executing the computer program, or execute the described
- the computer program realizes the method for generating a DNA molecular library as described in any one of the fifth aspect.
- the beneficial effect of the embodiment of the present application is that the present application converts the binary sequence corresponding to the data to be stored into a base sequence, and divides the base sequence according to the preset first length, and obtains An overlapping area of the second length is included between the adjacent core sequences of the key information, combined with the position information of the core sequence included in the key information in the base sequence, so as to facilitate the combination of the core sequences according to the overlapping area during decoding; the core Sequences and linker sequences are spliced to obtain sequence blocks, which facilitates the determination of the direction of the core sequence during decoding; during a single data storage, a predetermined number of a small amount of synthetic DNA molecules can be obtained from the DNA molecule library, greatly reducing one data storage The number of synthetic DNA molecules used can ensure multiple calls of DNA molecules synthesized in vitro at one time, effectively reducing the cost of DNA synthesis for data storage; at the same time, since the pre-synthesized DNA molecule library can be called repeatedly, avoiding
- Fig. 1 is a schematic flow diagram of the realization of the data storage method using DNA provided by the embodiment of the present application;
- Fig. 2 is a schematic diagram of generating a core sequence through a base sequence provided by an embodiment of the present application
- Fig. 3 is a schematic diagram of another base sequence generation core sequence provided by the embodiment of the present application.
- Fig. 4 is a schematic diagram of a core sequence obtained by segmentation provided by the embodiment of the present application.
- Fig. 5 is a schematic diagram of a spliced sequence block provided by an embodiment of the present application.
- Fig. 6 is a schematic diagram of a combination rule provided by the embodiment of the present application.
- FIG. 7 is a schematic flow diagram of a method for decoding data stored in a DNA medium provided in an embodiment of the present application.
- Fig. 8 is a schematic diagram of a device using DNA for data storage provided by an embodiment of the present application.
- FIG. 9 is a schematic diagram of a device for decoding data stored in a DNA medium provided in an embodiment of the present application.
- FIG. 10 is a schematic diagram of a storage device provided by an embodiment of the present application.
- the in vitro synthesis technology of DNA is usually based on the sequence set arbitrarily, without relying on the template, based on the raw material of the modified A/T/C/G base chemical molecule monomer, in vitro according to chemical synthesis or enzyme Synthetic method, in the way of adding one by one or several bases to the previous one/several bases in each round of chemical or enzymatic reactions, through multiple rounds of chemical or enzymatic reactions, synthesize A/T/ A macromolecular DNA polymer composed of C/G.
- the number of bases in the DNA sequence to be synthesized determines the synthesis of most macromolecular DNA polymers cost.
- Commercially available conventional DNA synthesis services are usually quoted to customers by multiplying the unit price of a base by the number of bases. For example, for conventional single-stranded DNA synthesis of 50 bases, commodity companies can quote 0.3-0.6 yuan per base, so that the price of 50 bases is between 15 yuan and 30 yuan.
- DNA data storage applications it is understood that only a very small fraction of a predetermined number of DNA molecules (eg, 1 molecule, 10 2 molecules, 10 3 molecules, 10 5 molecules, etc.) Represents the data information to be stored, so that the way of directly storing data information with one-time synthesized DNA will cause a great waste of raw materials for synthesizing DNA molecules.
- a predetermined number of DNA molecules eg, 1 molecule, 10 2 molecules, 10 3 molecules, 10 5 molecules, etc.
- This application proposes a method for data storage through pre-synthesized DNA sequences.
- the data is stored using a pre-synthesized general-purpose DNA molecular library that can be retrieved multiple times, which has good versatility and can be pre-synthesized as needed
- the DNA sequence corresponding to the data to be stored is extracted from the DNA molecular library, which greatly reduces the total number of bases that need to be synthesized for the DNA products used to store different data information and the number of DNA molecules synthesized at one time, reducing the cost of data storage, thus It is conducive to the wide application of DNA data storage. It will be described in detail below in conjunction with the accompanying drawings.
- FIG. 1 is a schematic diagram of the implementation process of using DNA for data storage provided by the embodiment of the present application, which is described in detail as follows:
- the data to be stored may include one or more items of data information such as pictures, texts, programs, audio, and videos that may exist in a computer.
- the coding information corresponding to the data to be stored may be obtained, and the corresponding coding information is converted into binary coding information, thereby obtaining the corresponding binary sequence.
- the text in the text information can be converted into the corresponding ASCII (English full name is American Standard Code for Information Interchange, the Chinese full name is American Standard Information Interchange Code) encoding, UNICODE (English full name is Universal Character Set, Chinese full name is Universal Character Set) encoding, and then the encoded information is converted into a binary sequence.
- the binary sequence is converted into a base sequence according to a preset mapping relationship.
- the preset mapping relationship may be a binary-quaternary mapping relationship.
- the mapping relationship may be as shown in Table 1:
- mapping relationship in the above table is arbitrarily defined, and the mapping relationship between binary values and bases can be defined according to actual usage habits or requirements.
- the binary sequence in S101 can be converted into a base sequence: "CGTTGCAAGATGCGTCGCCGGACGCGTAGCGAGCCTCGTCGTGGGATACGTTGATGGGCACGTTGGCTGGACCGGTGTGCGTTTCGTTGGATGTATCGTGGAGAGTAACGTAGCGAGAAACGTAGCGCGCTGCGGAGAGTGCGGCGTGGTCAGGAGCCCT".
- the file of the data to be stored can be split into multiple sub-files, and the order of the sub-base sequences corresponding to each sub-file can be recorded through the index sequence.
- the split sub-files can be recorded through an index sequence.
- the index sequence can also be added to the primer corresponding to the left joint or the right joint of the core sequence block described in this method, and further added to each subfile stored by this method through PCR and other polymerase amplification methods.
- a core sequence is amplified on a DNA molecule.
- the index sequence refers to a sequence composed of bases, and the index sequence can be used to represent the position information of the sub-file.
- the base sequence is divided into a plurality of core sequences of a preset first length, and an overlapping region of a preset second length is included between two associated core sequences.
- the first length may be 4 bases in length, 5 bases in length, 6 bases in length, 7 bases in length or 8 bases in length, etc.
- bases in an overlapping region of a second preset length are included. That is, the two core sequences have the same bases in the overlapping region. Based on the bases in this overlapping region, two core sequences that are associated can be found when combined.
- the two related core sequences determined by the preset association relationship can be two core sequences directly adjacent to the core sequence in the base sequence, or core sequences adjacent to an odd number of positions, or an even number of core sequences. bit-adjacent core sequences.
- the overlapping regions include 3 bases staggered and overlapped (a ), 4-base staggered overlap (b), 5-base staggered overlap (c), 6-base staggered overlap (d) and 7-base staggered overlap (e).
- the second length of the overlapping region is half of the first length of the core sequence. Not limited thereto, the first length and the second length may also be in other proportional relationships.
- the number of bases in the overlapping region is not limited to that shown in FIG. 2 , and may also include the number of bases in other overlapping regions.
- the length of the core sequence at the end obtained by base sequence segmentation is less than the preset first length, it can be completed by using a preset base type or a preset repeated base.
- a preset base type or a preset repeated base For example, during the segmentation process of the 5-base staggered overlap (c) in Figure 2, the core sequence at the end is filled with base A.
- the core sequence at the end is supplemented with bases AAAA, so that the completed core sequence has the same length as other core sequences, which is convenient for splicing and storage operations on the core sequence .
- the associated core sequences may be core sequences with adjacent odd-numbered bits or adjacent even-numbered bits.
- the schematic diagram of generating a core sequence from another base sequence shows 3 base parity overlaps (f), 4 base parity overlaps (g) and 3 consecutive 4 bases Schematic illustration of the staggered basis unit overlap (h).
- the overlapping region is 8 consecutive bases in two adjacent core sequences, and the length of the core sequence is 12 bases.
- the M+i-th and M+N+i-th core sequences can also be set to include an overlapping region of a preset second length, where M and N are predetermined integers, and i is greater than or An integer variable equal to 0.
- M and N are predetermined integers
- i is greater than or An integer variable equal to 0.
- any two adjacent core sequences include 4 bases in overlapping regions.
- the core sequence can be spliced in pairs according to the bases in the overlapping region of the core sequence in the DNA sequence.
- the core sequence and the linker sequence used to mark the sequence direction are spliced to obtain a sequence block.
- the linker sequence in the embodiments of the present application may include a front linker sequence and a back linker sequence, and may also be any one of the front linker sequence or the back linker sequence.
- the sequence blocks obtained by splicing adapter sequences can be used to mark the front-back direction of the core sequence. For example, the front or left direction of the core sequence is indicated by the front adapter sequence, and the rear or right direction of the core sequence is indicated by the rear adapter sequence. Therefore, when the DNA sequence is decoded, the direction of the core sequence can be determined according to the linker sequence, which facilitates the correct combination of the core sequence.
- Figure 4 is a schematic diagram of the core sequence obtained by segmentation.
- the 26 core sequences can be spliced according to the preset front linker sequence "CGCCAGGGTTTTTCCCAGTCACGAC” and the preset back linker sequence "TCCTGTGTGAAATTGTTATCCGCT”, respectively, as shown in Figure 5 Schematic representation of the assembled sequence blocks.
- the DNA sequence matching the sequence block is searched in the pre-synthesized DNA molecule library, and a predetermined number of synthesized DNA molecules corresponding to the extracted DNA sequences are taken and amplified to obtain a DNA product.
- a synthetic DNA molecule library is preset, and the corresponding relationship between the synthetic DNA molecule and the DNA sequence is stored in the DNA molecule library.
- the DNA sequence corresponding to the sequence block can be searched in the preset DNA molecular library, and a small amount of molecules in the synthesized DNA molecules found in the DNA molecular library can be retrieved (eg, 1 molecule, 10 2 molecules, 10 3 molecules, 10 5 molecules, etc.)
- the number of DNA molecules used for data storage is greatly reduced, thereby effectively reducing the cost of DNA synthesis for data storage.
- the pre-synthesized DNA molecular library may include a DNA molecular library composed of core sequences of different base lengths.
- the length of the core sequence can include any sequence composed of 2 bases in length, any sequence composed of 3 bases in length, any sequence composed of 4 bases in length, and any sequence composed of 5 bases in length. sequence, an arbitrary sequence consisting of 6 bases in length, an arbitrary sequence consisting of 7 bases in length, an arbitrary sequence consisting of 8 bases in length, etc.
- other calculations are calculated by analogy.
- the set core sequence is spliced with the linker sequence.
- the left linker sequence and the right linker sequence are respectively spliced on the left and right sides of the core sequence.
- a library of DNA molecules is obtained by synthesizing a large number of DNA molecules with linker sequences.
- the remaining DNA molecules in the DNA molecule library can continue to be used, which is conducive to further reducing the data storage cost of the DNA medium.
- the primer amplification method adopted may include isothermal amplification, PCR (full name in Chinese is called polymerase chain reaction) amplification and other amplification methods.
- the amplified DNA product sequence and corresponding key information are stored, the key information includes more than one core sequence, or the key information includes more than one of the core sequences Part of the bases, and the included position information of the core sequence in the base sequence.
- the key information includes more than one core sequence, or more than one part of bases in the core sequence, and the corresponding position information of the core sequence in the base sequence, so that the core sequence can be quickly determined exact location.
- the key information includes a core sequence at a start position and a core sequence at an end position. Therefore, the core sequence at the middle position can be spliced according to the core sequence at the starting position and the core sequence at the end position, and the bases in the overlapping region. In a possible implementation manner, several core sequences at intermediate positions may also be included. When the number of bases in the overlapping region is smaller, the amount of position information of the core sequence can be increased.
- the sequence number of the position information in the base sequence can be converted into a base unit, and the base unit converted from the position information and the core sequence can be stored in the form of DNA according to a predetermined combination method .
- the combination can be performed according to the combination rule shown in FIG. 6 , where the position number 1 corresponds to the base unit AAAA, the position number 18 corresponds to the base unit ACAA, and the position sequence 100 corresponds to the base unit CTGA.
- the corresponding relationship between the position number and the base unit can be determined according to a preset mapping relationship.
- the position information and base unit sequence in the key information can also be stored by a computer-readable storage medium.
- the key information is stored in a mixed form of DNA and a computer-readable storage medium.
- the amplified DNA product When storing the amplified DNA product, it can be stored by freeze-drying, or it can also be stored in the form of liquid.
- the storage temperature can be -20 degrees or -80 degrees, etc.
- the amplified DNA product can be stored in a centrifuge tube, a cryopreservation tube, or the amplified DNA product can also be preserved in the form of wax drops.
- the key information can be determined through calculation and simulation.
- the position information of the core sequence recorded in the key information includes the core sequence at the start position, the core sequence at the end position, and the core sequence at the center position.
- the base sequence determined by S102 is:
- the key information may also include one or both of the linker sequence and/or the index sequence corresponding to the sub-base sequences obtained by splitting the base sequence.
- Fig. 7 is a schematic diagram of the implementation flow of a method for decoding DNA media storage data provided in the embodiment of the present application, the method comprising:
- the method of sequencing reading includes any method that can read DNA products, such as second-generation sequencing, third-generation sequencing, etc., to obtain the DNA sequence to be decoded corresponding to the DNA product.
- the DNA sequence and its key information to be decoded are the amplified DNA sequence and key information obtained by the data storage method shown in FIG. 1 .
- the key information may include a core sequence at the start position and/or a core sequence at the end position.
- the key information may also include one or both of an adapter sequence and an index sequence corresponding to sub-base sequences obtained by splitting the base sequence.
- the linker information in the DNA sequence can be segmented through the linker sequence to obtain the core sequence included in the DNA sequence, and the direction of the core sequence can be distinguished through the linker information, which facilitates the accurate combination of the core sequence.
- the order of the combined multiple base subsequences can be easily determined through the index sequence, so that an accurate base sequence can be obtained according to the determined order.
- the core sequence included in the DNA sequence is extracted according to the preset linker sequence.
- the preset joint sequence can be preset and can be directly called and used during decoding.
- different linker sequences can be selected and stored in the key information by means of DNA.
- the set joint information can be extracted by analyzing the key information, thereby improving the security of DNA data storage.
- the linker sequence may include a left linker sequence and/or a right linker sequence, and one or two linker sequences may be used to mark the direction of the core sequence, so as to facilitate decoding to obtain the core sequence in the correct direction.
- the 26 sequence blocks can be cut according to the preset front linker sequence "CGCCAGGGTTTTCCCAGTCACGAC” and the preset back linker sequence "TCCTGTGTGAAATTGTTATCCGCT” to obtain the 4 shows the core sequence.
- the decryption process using the key information in the embodiment of the present application corresponds to the encoding and storage process using the key information.
- the initial position of the core sequence to be combined is accurately determined, and other core sequences are processed according to the initial position. combination to determine the position of other core sequences in the base sequence.
- the core sequence is combined to obtain the spliced base sequence .
- the base sequence corresponding to the DNA sequence to be decrypted can be obtained by combining the overlapping region between the core sequences and the preset key information as "CGTTGCAAGATGCGTCGCCGGACGCGTAGCGAGCCTCGTCGTGGGATACGTTGATGGGCACGTTGGCTGGACCGGTGTGCGTTTCGTTGGATGTATCGTGGAGAGTAACGTAGCGAGTAACGTAGCGCGCTGCGTTGAGT".
- the core sequence in the key information and the included core sequence position information may include the core sequence at the first position and the core sequence at the end position.
- the base sequence can be obtained by splicing the DNA sequence directly according to the overlapping region.
- the base sequence is converted into a binary sequence according to a preset mapping relationship.
- the binary data files can be converted into corresponding data files, including files such as pictures, text, programs, audio, and video.
- a predetermined amount of a small amount of synthetic DNA molecules can be obtained from a pre-synthesized DNA molecule library in vitro, which can greatly reduce the number of synthetic DNA molecules used for a data storage, and can ensure an in vitro Multiple calls of synthesized DNA molecules effectively reduce the cost of DNA synthesis for data storage.
- the pre-synthesized DNA molecular library can be called repeatedly, avoiding the need to synthesize at least one-half of the corresponding data for different binary data, saving the overall number of base synthesis, and further reducing the storage data. synthetic cost.
- Figure 8 is a device for data storage using DNA provided by the embodiment of the present application, the device includes:
- a binary sequence extraction unit 801 configured to extract a binary sequence corresponding to the data to be stored
- the first sequence conversion unit 802 is configured to convert the binary sequence into a base sequence according to a preset mapping relationship
- a base segmentation unit 803 configured to segment the base sequence into a plurality of core sequences of a preset first length, and include an overlapping region of a preset second length between two associated core sequences;
- a sequence splicing unit 804 configured to splice the core sequence and the linker sequence used to mark the sequence direction to obtain a sequence block;
- the DNA molecule extraction unit 805 is used to search for a DNA sequence matching the sequence block in the pre-synthesized DNA molecule library, and amplify a predetermined number of synthetic DNA molecules corresponding to the extracted DNA sequence to obtain a DNA product ;
- the DNA storage unit 806 is used to store the amplified DNA product sequence and corresponding key information, the key information includes more than one core sequence, or the key information includes more than one core sequence Part of the bases in the sequence, and the included position information of the core sequence in the base sequence.
- the device for storing data using DNA corresponds to the method for storing data using DNA shown in FIG. 1 .
- Fig. 9 is a schematic diagram of a device for decoding DNA media storage data provided in an embodiment of the present application, the device comprising:
- DNA sequence acquisition unit 901 configured to acquire the DNA sequence to be decoded and its key information
- a core sequence extraction unit 902 configured to extract the core sequence included in the DNA sequence according to the preset linker sequence
- a sequence combination unit 903 configured to combine the core sequences to generate a base sequence according to the key information and in combination with overlapping regions between the core sequences;
- the second sequence conversion unit 904 is configured to convert the base sequence into a binary sequence according to a preset mapping relationship
- a data file generating unit 905, configured to generate a data file according to the converted binary data.
- the device for decoding data stored in a DNA medium shown in FIG. 9 corresponds to the method for decoding data stored in a DNA medium shown in FIG. 7 .
- Fig. 10 is a schematic diagram of a storage device provided by an embodiment of the present application.
- the storage device 10 of this embodiment includes: a processor 100, a memory 101, and a computer program 102 stored in the memory 101 and operable on the processor 100, for example, using DNA for data storage or decoding programs.
- the processor 100 executes the computer program 102, the steps in the above embodiments of the method for storing or decoding data using DNA are realized.
- the processor 100 executes the computer program 102, the functions of the modules/units in the foregoing device embodiments are implemented.
- the computer program 102 may be divided into one or more modules/units, and the one or more modules/units are stored in the memory 101 and executed by the processor 100 to complete this application.
- the one or more modules/units may be a series of computer program instruction segments capable of accomplishing specific functions, and the instruction segments are used to describe the execution process of the computer program 102 in the storage device 10 .
- the storage device may include, but not limited to, a processor 100 and a memory 101 .
- FIG. 10 is only an example of the storage device 10, and does not constitute a limitation to the storage device 10. It may include more or less components than those shown in the illustration, or combine some components, or different components. , for example, the storage device may also include an input and output device, a network access device, a bus, and the like.
- the so-called processor 100 may be a central processing unit (Central Processing Unit, CPU), and may also be other general-purpose processors, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), Off-the-shelf programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
- a general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.
- the storage 101 may be an internal storage unit of the storage device 10 , such as a hard disk or a memory of the storage device 10 .
- the memory 101 can also be an external storage device of the storage device 10, such as a plug-in hard disk equipped on the storage device 10, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, flash memory card (Flash Card), etc.
- the storage 101 may also include both an internal storage unit of the storage device 10 and an external storage device.
- the memory 101 is used to store the computer program and other programs and data required by the storage device.
- the memory 101 can also be used to temporarily store data that has been output or will be output.
- the disclosed apparatus/terminal device and method may be implemented in other ways.
- the device/terminal device embodiments described above are only illustrative.
- the division of the modules or units is only a logical function division.
- the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
- the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
- each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
- the above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.
- the integrated module/unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments in the present application can also be completed by instructing related hardware through computer programs.
- the computer programs can be stored in a computer-readable storage medium, and the computer When the program is executed by the processor, the steps in the above-mentioned various method embodiments can be realized.
- the computer program includes computer program code, and the computer program code may be in the form of source code, object code, executable file or some intermediate form.
- the computer readable medium may include: any entity or device capable of carrying the computer program code, recording medium, U disk, removable hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory) , Random Access Memory (RAM, Random Access Memory), electrical carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the content contained in the computer-readable medium may be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, computer-readable media Excluding electrical carrier signals and telecommunication signals.
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Abstract
Description
| 二进制数值 | 00 | 01 | 11 | 10 |
| 碱基 | A | T | C | G |
Claims (16)
- 一种利用DNA进行数据存储的方法,其特征在于,所述方法包括:提取待存储数据对应的二进制序列;根据预设的映射关系,将所述二进制序列转换为碱基序列;将所述碱基序列分割为多个预设第一长度的核心序列,且两个关联的核心序列之间包括预设第二长度的重叠区域;将所述核心序列与用于标示序列方向的接头序列进行拼接得到序列块;在预先合成的DNA分子库中查找与所述序列块匹配的DNA序列,取预定数量的所提取的DNA序列对应的、合成的DNA分子进行扩增得到DNA产物;存储所扩增获得的DNA产物及对应的密钥信息,所述密钥信息包括一个以上所述核心序列,或者,所述密钥信息包括一个以上的所述核心序列中的部分碱基,以及所包括的所述核心序列在所述碱基序列中的位置信息。
- 根据权利要求1所述的方法,其特征在于,所述接头序列包括左接头序列和右接头序列中的一项或者两项,当所述接头序列包括左接头序列和右接头序列时,所述左接头序列与所述右接头序列不同。
- 根据权利要求1所述的方法,其特征在于,将所述二进制序列转换为碱基序列,包括:对所述待存储数据对应的文件进行拆分,根据文件拆分的结果对所述碱基序列进行拆分,并为拆分的碱基序列分配对应的索引序列。
- 根据权利要求1所述的方法,其特征在于,两个关联的核心序列之间包括预设第二长度的重叠区域,包括:相邻两个核心序列之间包括预设第二长度的重叠区域;或者,相邻的奇数位的核心序列之间包括预设第二长度的重叠区域,以及相邻的偶数位的核心序列之间包括预设第二长度的重叠区域;或者,第M+i位和第M+N+i位的核心序列之间包括预设第二长度的重叠区域,其中,M和N为预定的整数,i为大于或等于0的整数变量。
- 根据权利要求1所述的方法,其特征在于,将所述碱基序列分割为多个预设第一长度的核心序列,包括:当划分得到的最后一个核心序列的长度小于第一长度时,通过预设的重复碱基补齐所述最后一个核心序列。
- 根据权利要求1所述的方法,其特征在于,存储所扩增获得的DNA产物及对应的密钥信息,包括:根据预设的碱基单元与位置信息的映射关系,将所述密钥信息中的位置信息转换为碱基单元,根据预设的组合方式,将密钥信息中的核心序列,以及所述碱基单元,以DNA形式进行存储;或者,所述密钥信息中的核心序列,以及所包括的核心序列的位置信息通过计算机可读存储介质存储;或者,所述的密钥信息通过DNA形式和计算机可读存储介质形式进行混合存储。
- 根据权利要求1-6任一项所述的方法,其特征在于,所述密钥信息包括起始位置的核心序列和/或末尾位置的核心序列。
- 根据权利要求7所述的方法,其特征在于,所述密钥信息还包括所述接头序列、拆分所述碱基序列得到的子碱基序列所对应的索引序列中的一项或者两项。
- 一种利用DNA进行数据存储的装置,其特征在于,所述装置包括:二进制序列提取单元,用于提取待存储数据对应的二进制序列;第一序列转换单元,用于根据预设的映射关系,将所述二进制序列转换为碱基序列;碱基分割单元,用于将所述碱基序列分割为多个预设第一长度的核心序列,且两个关联的核心序列之间包括预设第二长度的重叠区域;序列拼接单元,用于将所述核心序列与用于标示序列方向的接头序列进行拼接得到序列块;DNA分子提取单元,用于在预先合成的DNA分子库中查找与所述序列块匹配的DNA序列,取预定数量的所提取的DNA序列对应的、合成的DNA分子进行扩增得到DNA产物;DNA存储单元,用于存储所扩增获得的DNA产物及对应的密钥信息,所述密钥信息包括一个以上所述核心序列,或者,所述密钥信息包括一个以上所述核心序列中的部分碱基,以及所包括的所述核心序列在所述碱基序列中的位置信息。
- 一种DNA介质存储数据的解码方法,其特征在于,所述方法包括:获取待解码的DNA序列及其密钥信息;根据预设的接头序列,提取所述DNA序列中包括的核心序列;根据所述密钥信息,结合所述核心序列之间的重叠区域,将所述核心序列组合生成碱基序列;根据预设的映射关系,将所述碱基序列转换为二进制序列;根据所转换的二进制数据生成数据文件。
- 根据权利要求10所述的方法,其特征在于,根据预设的接头序列,提取所述DNA序列中包括的核心序列,包括:根据预设的接头序列,对所述DNA序列进行切割得到核心序列;根据所述接头序列的位置,确定所得到的核心序列的方向。
- 根据权利要求10所述的方法,其特征在于,根据所述密钥信息,结合所述核心序列之间的重叠区域,将所述核心序列组合生成碱基序列,包括:根据所述密钥信息确定一个以上的核心序列在碱基序列中的位置;根据所述核心序列之间的重叠区域,确定所述核心序列之间的相对位置关系,根据确定了相对位置关系的核心序列生成所述碱基序列。
- 根据权利要求10-12任一项所述的方法,其特征在于,根据预设的接头序列,提取所述DNA序列中包括的核心序列,包括:当提取的核心序列的末尾包括预设的重复碱基时,去除该核心序列的末尾所包括的所述重复碱基。
- 一种DNA介质存储数据的解码的装置,其特征在于,所述装置包括:DNA序列获取单元,用于获取待解码的DNA序列及其密钥信息;核心序列提取单元,用于根据预设的接头序列,提取所述DNA序列中包括的核心序列;序列组合单元,用于根据所述密钥信息,结合所述核心序列之间的重叠区域,将所述核心序列组合生成碱基序列;第二序列转换单元,用于根据预设的映射关系,将所述碱基序列转换为二进制序列;数据文件生成单元,用于根据所转换的二进制数据生成数据文件。
- 一种DNA分子库的生成方法,其特征在于,所述方法包括:根据碱基组合生成核心序列,所述核心序列包括用于存储数据的碱基片段;在所述核心序列上拼接预设的接头序列,得到所述核心序列对应的DNA序列,所述接头序列用于标识所述核心序列的方向;根据所述DNA序列合成对应的DNA分子,根据所合成的DNA分子得到DNA分子库。
- 一种存储设备,包括存储器、处理器以及存储在所述存储器中并可在所述处理器上运行的计算机程序,其特征在于,所述处理器执行所述计算机程序时实现如权利要求1至8任一项所述利用DNA进行数据存储的方法的步骤,或者执行所述计算机程序时实现如权利要求10-13任一项所述DNA介质存储数据的解码的方法,或者权利要求15所述的DNA分子库的生成方法。
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